In this project, you will use the UNIX command line to create photo albums that organize photos into directories by date. You'll learn what's the difference between a terminal, bash, command-line, and prompt. With lots of hands-on exercises, you'll master the most fundamental Unix commands for navigating, manipulating and inspecting files. Interacting with a computer through a command-line interface (CLI) is a powerful technique. In such an interface, you type commands telling the computer to perform desired tasks. Mastering the command line can greatly improve your productivity during development.